To aid in geometric calculations with construction staging, it would be beneficial for beams to have an erection camber and residual camber values. OBM could model two beams in the same location:

1) Construction Case Beam is before deck placement, using the erected camber value, which would not be displayed by default.

2) Final Condition Beam after deck placement, using residual camber (the beam that is currently modeled)

The construction case girder should have a different level and feature definition to allow easy toggling on/off. This is somewhat analogous to the recently added feature of the deck terrain being modeled, but not displayed unless desired.